<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      // const xxx = 'info'
      // const obj = {
      //   name: 'zs',
      //   [xxx]: 123 // ['info']:123 ==> info: 123
      // }
      // console.log(obj)

      let arr = [1, 2, 3]
      const newARR = arr.filter((item) => {
        // if (item === 2) {
        //   return false
        // } else {
        //   return true
        // }
        return item !== 2
      })

      console.log(newARR)
    </script>
  </body>
</html>
